[Primary adrenal insufficiency in children]

Carlos Alberto Longui1

  • 1Unidade de Endocrinologia Pediátrica, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP.

Insights

Primary adrenal insufficiency in children presents with vague symptoms and requires prompt diagnosis through lab tests and genetic studies. Early hormone replacement therapy is crucial for managing this rare pediatric endocrine disorder.

Area of Science:

  • Pediatric Endocrinology
  • Adrenal Gland Disorders
  • Rare Diseases

Context:

  • Primary adrenal insufficiency is a rare pediatric endocrine condition.
  • It can manifest in chronic or acute forms, often exacerbated by stress.
  • Clinical presentation is often non-specific, including weakness, hypotension, and hypoglycemia.

Purpose:

  • To outline the diagnostic approaches for pediatric primary adrenal insufficiency.
  • To detail the etiological factors, both acquired and genetic.
  • To emphasize the importance of timely diagnosis and management.

Summary:

  • Etiologies include infectious, hemorrhagic, drug-induced, and genetic causes like congenital adrenal hyperplasia and Addison's disease.
  • Diagnosis involves assessing clinical history, familial factors, and laboratory tests including cortisol, ACTH, and steroidogenic precursors.
  • The ACTH stimulation test aids in intermediate cases, while auto-antibody and molecular studies confirm specific conditions.

Impact:

  • Highlights the need for considering adrenal insufficiency in pediatric patients with non-specific symptoms.
  • Emphasizes the role of comprehensive diagnostic workup, including genetic analysis.
  • Stresses the importance of prompt glucocorticoid and mineralocorticoid replacement for optimal growth and development.

Related Concept Videos

Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
Cushing Syndrome I: Introduction01:26

Cushing Syndrome I: Introduction

Cushing syndrome refers to the collection of clinical manifestations that arise when tissues are exposed to excessive amounts of cortisol or cortisol-like medications over an extended period. Cortisol, a glucocorticoid produced by the adrenal cortex, regulates metabolism, immune responses, and the body’s adaptation to stress. When its concentration remains chronically elevated, these physiological pathways become dysregulated, resulting in the characteristic features of the syndrome.Exogenous...
Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
Insulin: Dosing Regimen and Adverse Effects01:16

Insulin: Dosing Regimen and Adverse Effects

Insulin-replacement therapy usually includes both long-acting insulin (basal) and short-acting insulin (to cater to postprandial needs). In a diverse group of type 1 diabetes patients, the average daily insulin dose is typically 0.5-0.7 units/kg body weight. However, obese patients and pubertal adolescents may need more due to insulin resistance.
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...